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Incoming CME X2 Solar Flare

February 17, 2011

Space weather reports: INCOMING CME: A coronal mass ejection (CME) propelled toward Earth by the X2-flare of Feb. 15th should arrive during the late hours of Feb. 17th–that’s today. A moderately strong geomagnetic storm is likely when it arrives. High-latitude sky watchers should be alert for auroras after nightfall.

NASA’s researchers have made a time-lapse movie of the Feb. 17th explosion. Click on the arrow to play the movie, then scroll down for commentary on the Space Weather site.

UPDATE February 18, 2011:
ANOTHER X-FLARE–ALMOST: Fast-growing active region 1161 erupted this morning, producing an M6.6-class solar flare at 1011 UT. The almost-X category blast was one of the strongest flares in years and continued the week-long trend of high solar activity. SOHO coronagraph images show no accompanying CME, so Earth effects should be minimal.

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